JOINT FILING AGREEMENT
PURSUANT TO RULE 13d-1(k)
The undersigned acknowledge and agree that the foregoing statement on Schedule 13G is filed on behalf of each of the undersigned and that all subsequent amendments to this statement on Schedule 13G shall be filed on behalf of each of the undersigned without the necessity of filing additional joint filing agreements. The undersigned acknowledge that each shall be responsible for the timely filing of such amendments, and for the completeness and accuracy of the information concerning him or it contained herein and therein, but shall not be responsible for the completeness and accuracy of the information concerning the others, except to the extent that he or it knows or has reason to believe that such information is inaccurate.
DATE: January 2, 2023
| DAVID M. LEUSCHEN |
| /s/ David M. Leuschen |
| David M. Leuschen |
| PIERRE F. LAPEYRE, JR. |
| /s/ Pierre F. Lapeyre, Jr. |
| Pierre F. Lapeyre, Jr. |
| RIVERSTONE MANAGEMENT GROUP L.L.C. |
| /s/ Christina Shalhoub |
| Name: Christina Shalhoub |
| Title: Chief Commercial Officer |
| RIVERSTONE/GOWER MGMT CO HOLDINGS, L.P. |
| By: Riverstone Management Group, L.L.C., its general partner |
| /s/ Christina Shalhoub |
| Name: Christina Shalhoub |
| Title: Authorized Person |
| RIVERSTONE HOLDINGS LLC |
| /s/ Christina Shalhoub |
| Name: Christina Shalhoub |
| Title: Authorized Person |
| DECARBONIZATION PLUS ACQUISITION SPONSOR HOLDINGS IV LLC |
| /s/ Christina Shalhoub |
| Name: Christina Shalhoub |
| Title: Authorized Person |
| DECARBONIZATION PLUS ACQUISITION SPONSOR IV LLC |
| By: Decarbonization Plus Acquisition Sponsor Holdings IV LLC, its sole and managing member |
| /s/ Christina Shalhoub |
| Name: Christina Shalhoub |
| Title: Authorized Person |
| RIVERSTONE ENERGY GP V LTD. |
| /s/ Christina Shalhoub |
| Name: Christina Shalhoub |
| Title: Authorized Person |
| RIVERSTONE GP V CAYMAN LLC |
| /s/ Christina Shalhoub |
| Name: Christina Shalhoub |
| Title: Authorized Person |
| RIVERSTONE ENERGY PARTNERS V (CAYMAN), L.P. |
| By: Riverstone GP V Cayman LLC, its general partner |
| /s/ Christina Shalhoub |
| Name: Christina Shalhoub |
| Title: Authorized Person |
| RIVERSTONE GLOBAL ENERGY AND POWER FUND V (CAYMAN), L.P. |
| By: Riverstone Energy Partners V (Cayman), L.P., its general partner |
| By: Riverstone GP V Cayman LLC, its general partner |
| /s/ Christina Shalhoub |
| Name: Christina Shalhoub |
| Title: Authorized Person |
| RIVERSTONE V HAMMERHEAD HOLDINGS LLC |
| /s/ Christina Shalhoub |
| Name: Christina Shalhoub |
| Title: Authorized Person |
| RIVERSTONE HOLDINGS II (CAYMAN), LTD. |
| /s/ Christina Shalhoub |
| Name: Christina Shalhoub |
| Title: Authorized Person |
| RIVERSTONE ENERGY LIMITED INVESTMENT HOLDINGS, L.P. |
| By: Riverstone Holdings II (Cayman) Ltd., its general partner |
| /s/ Christina Shalhoub |
| Name: Christina Shalhoub |
| Title: Authorized Person |
| REL IP GENERAL PARTNER LIMITED |
| /s/ Christina Shalhoub |
| Name: Christina Shalhoub |
| Title: Authorized Person |
| REL IP GENERAL PARTNER LP |
| By: REL IP General Partner Limited, its general partner |
| /s/ Christina Shalhoub |
| Name: Christina Shalhoub |
| Title: Authorized Person |
| REL BATAVIA PARTNERSHIP, L.P. |
| By: REL IP General Partner IP, its general partner |
| By: REL IP General Partner Limited, its general partner |
| /s/ Christina Shalhoub |
| Name: Christina Shalhoub |
| Title: Authorized Person |
| REL BATAVIA HAMMERHEAD HOLDINGS LLC |
| /s/ Christina Shalhoub |
| Name: Christina Shalhoub |
| Title: Authorized Person |
| R5 HHR FS HOLDINGS LLC |
| /s/ Christina Shalhoub |
| Name: Christina Shalhoub |
| Title: Authorized Person |